Activity跳转与返回

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mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
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mso-style-qformat:yes;
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mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

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/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

两个
Activity
跳转，都是在第一个
Activity
调用
startActivity()
方法启动第二个
Activity
，然后在第二个
Activity
调用
Context.finish()
方法实现返回到第一个
Activity
。但是有的时候业务需求很复杂，从第二个
Activity
返回到第一个
Activity
时候，需要再次处理某些事情时就要使用
startActivityForResult()
方法启动第二个
Activity
了，并在第一个
Activity
中重写
onActivityResult()
方法。

@Override

public void onCreate(Bundle savedInstanceState)
{

         
super.onCreate(savedInstanceState);

         
setContentView(R.layout.main);

 

         
btnLogin = (Button)
findViewById(R.id.btnLogin);

         
userid = (EditText)
findViewById(R.id.userid);

         
pwd = (EditText)
findViewById(R.id.password);

 

         
btnLogin.setOnClickListener(new
View.OnClickListener() {

                  
@Override

                  
public void
onClick(View v) {

                            
if
(userid.getText().toString().equals("tony")

                                              
&&
pwd.getText().toString().equals("1")) {

                                     
Intent
it = new Intent(LoginActivity.this,

                                                        
SuccessActivity.class);

                                     
it.putExtra("userid",
userid.getText().toString());

                                     
startActivityForResult(it,
1);

                            
}
else {

                                     
Intent
it = new Intent(LoginActivity.this,

                                                        
FailureActivity.class);

                                     
startActivityForResult(it,
2);

                            
}

                  
}

         
});

}

 

@Override

protected void
onActivityResult(int requestCode, int resultCode, Intent data) {

         
switch (requestCode)
{

         
case 1:

                  
//
登录成功之后返回的。

                  
Log.v(TAG,
"from success activity return. resultCode=" + resultCode);

                  
break;

         
case 2:

                  
//
登录失败之后返回的。

                  
Log.v(TAG, "from failure activity return.
resultCode=" + resultCode);

         
}

         
super.onActivityResult(requestCode,
resultCode, data);

 

}

 

}

Normal
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7.8 磅
0
2

false
false
false

EN-US
ZH-CN
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

成功屏幕
SuccessActivity

Normal
0

7.8 磅
0
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false
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EN-US
ZH-CN
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

public class SuccessActivity extends Activity {

 

Button btnBack;

TextView label;

 

@Override

protected void onCreate(Bundle
savedInstanceState) {

         
super.onCreate(savedInstanceState);

         
setContentView(R.layout.success);

 

         
label = (TextView)
findViewById(R.id.label);

         
Bundle bundle =
this.getIntent().getExtras();

         
String userid =
bundle.getString("userid");

         
label.setText(userid);

         
btnBack = (Button)
findViewById(R.id.btnBack);

         
btnBack.setOnClickListener(new
View.OnClickListener() {

 

                  
@Override

                  
public void
onClick(View v) {

                            
setResult(4,
(new Intent()).putExtra("name", label.getText()

                                              
.toString()));

                            
SuccessActivity.this.finish();

                  
}

         
});

 

}

 

}

Normal
0

7.8 磅
0
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false
false

EN-US
ZH-CN
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

失败屏幕
FailureActivity

Normal
0

7.8 磅
0
2

false
false
false

EN-US
ZH-CN
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:"Calibri","serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}

public class FailureActivity extends Activity {

Button btnBack ;

TextView label;

@Override

protected void onCreate(Bundle
savedInstanceState) {

         
super.onCreate(savedInstanceState);

         
setContentView(R.layout.failure);

         
label 
= (TextView)findViewById(R.id.label);

         
btnBack =
(Button)findViewById(R.id.btnBack);

         
btnBack.setOnClickListener(new
View.OnClickListener() {

 

                  
@Override

                  
public void
onClick(View v) {

                            
setResult(5);

                            
FailureActivity.this.finish();

                  
}

         
});

 

}

 

}

时间： 2024-12-01 02:01:39

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